// Copyright 2025 Code Philosophy
//
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// of this software and associated documentation files (the "Software"), to deal
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// SOFTWARE.

﻿using System.Runtime.InteropServices;

namespace Luban.Utils;

public static class ConsoleUtil
{
    private static class NativeFunctions
    {
        public enum StdHandle : int
        {
            STD_INPUT_HANDLE = -10,
            STD_OUTPUT_HANDLE = -11,
            STD_ERROR_HANDLE = -12,
        }

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr GetStdHandle(int nStdHandle); //returns Handle

        public enum ConsoleMode : uint
        {
            ENABLE_ECHO_INPUT = 0x0004,
            ENABLE_EXTENDED_FLAGS = 0x0080,
            ENABLE_INSERT_MODE = 0x0020,
            ENABLE_LINE_INPUT = 0x0002,
            ENABLE_MOUSE_INPUT = 0x0010,
            ENABLE_PROCESSED_INPUT = 0x0001,
            ENABLE_QUICK_EDIT_MODE = 0x0040,
            ENABLE_WINDOW_INPUT = 0x0008,
            ENABLE_VIRTUAL_TERMINAL_INPUT = 0x0200,

            //screen buffer handle
            ENABLE_PROCESSED_OUTPUT = 0x0001,
            ENABLE_WRAP_AT_EOL_OUTPUT = 0x0002,
            ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004,
            DISABLE_NEWLINE_AUTO_RETURN = 0x0008,
            ENABLE_LVB_GRID_WORLDWIDE = 0x0010
        }

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern bool GetConsoleMode(IntPtr hConsoleHandle, out uint lpMode);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern bool SetConsoleMode(IntPtr hConsoleHandle, uint dwMode);
    }

    public static void EnableQuickEditMode(bool enable)
    {
        if (System.OperatingSystem.IsWindows())
        {
            //QuickEdit lets the user select text in the console window with the mouse, to copy to the windows clipboard.
            //But selecting text stops the console process (e.g. unzipping). This may not be always wanted.
            IntPtr consoleHandle = NativeFunctions.GetStdHandle((int)NativeFunctions.StdHandle.STD_INPUT_HANDLE);
            UInt32 consoleMode;

            NativeFunctions.GetConsoleMode(consoleHandle, out consoleMode);
            if (enable)
            {
                consoleMode |= ((uint)NativeFunctions.ConsoleMode.ENABLE_QUICK_EDIT_MODE);
            }
            else
            {
                consoleMode &= ~((uint)NativeFunctions.ConsoleMode.ENABLE_QUICK_EDIT_MODE);
            }

            consoleMode |= ((uint)NativeFunctions.ConsoleMode.ENABLE_EXTENDED_FLAGS);

            NativeFunctions.SetConsoleMode(consoleHandle, consoleMode);
        }
    }
}
